The application of tungsten-nickel-iron alloy in vibration damping components of precision optical platforms, relying on its high density and high stability, provides a stable environmental foundation for optical experiments and precision measurements. Precision optical platforms are the core carriers of high-precision optical experiments such as laser interference, holographic imaging, and spectral analysis, with extremely high requirements for vibration suppression. Even micron-level vibrations may lead to distortion of experimental data or blurred imaging. The role of vibration damping components is to isolate external vibrations (such as ground vibrations, equipment operation vibrations) and attenuate vibrations generated by the platform itself, and tungsten-nickel-iron alloy is a key material to realize this function.
In vibration damping components, tungsten-nickel-iron alloy is often made into mass blocks, which form a passive vibration damping system in cooperation with elastic elements (such as springs, rubber pads). Its high-density characteristic enables the mass block to have large inertia in a small volume. When external vibrations are transmitted to the platform, the mass block will generate a force opposite to the vibration direction due to inertia, and cooperate with the deformation of the elastic element to absorb vibration energy, thereby significantly reducing the vibration amplitude of the platform. For example, in laser interference measurement experiments, the optical platform equipped with tungsten-nickel-iron alloy vibration damping components can control vibrations at the nanometer level, ensuring the stability of interference fringes and improving measurement accuracy.
The dimensional stability of the alloy is also important. During temperature changes or long-term use, its shape and volume remain almost unchanged, ensuring the stability of the natural frequency of the vibration damping system and avoiding fluctuations in vibration damping effect due to material deformation. In addition, tungsten-nickel-iron alloy has excellent mechanical properties, which can withstand the long-term interaction force between the mass block and the elastic element, is not easy to suffer from fatigue damage, and prolongs the service life of the vibration damping components. In the observation platform of large optical telescopes, such vibration damping components are indispensable. They can effectively offset external disturbances such as wind force and earthquakes, ensuring the precise observation of distant celestial bodies by the telescope.
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